/*
 * Copyright 2013-2019 Xia Jun(3979434@qq.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ***************************************************************************************
 *                                                                                     *
 *                        Website : http://www.farsunset.com                           *
 *                                                                                     *
 ***************************************************************************************
 */
package com.workcell.workdata.im.service.impl;

import com.workcell.workdata.im.component.event.CommentEvent;
import com.workcell.workdata.im.constant.ChangeType;
import com.workcell.workdata.im.entity.Comment;
import com.workcell.workdata.im.repository.CommentRepository;
import com.workcell.workdata.im.service.CommentService;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Date;

@Service
public class CommentServiceImpl implements CommentService {

	@Resource
	private CommentRepository commentRepository;

	@Resource
	private ApplicationContext applicationContext;

	@Override
	public void add(Comment comment) {

		comment.setCreateTime(new Date());
		this.commentRepository.saveAndFlush(comment);

		applicationContext.publishEvent(new CommentEvent(comment, ChangeType.ADD));
	}

	@Override
	public Comment findOne(Long id) {
		return commentRepository.findById(id).orElse(null);
	}

	@Override
	public void delete(Long id) {

		Comment comment = findOne(id);

		if (comment == null){
			return;
		}

		/*
		 * 如果没有被引用回复，直接删除
		 * 否则逻辑删除
		 */
		if (this.commentRepository.countChild(id) == 0){
			commentRepository.remove(id);
		}else {
			commentRepository.delete(id);
		}

		applicationContext.publishEvent(new CommentEvent(comment, ChangeType.DELETE));
	}

}
